File-cutting machine.



PATENTED OCT. 16, 1906.

J; A. HESS. FILE CUTTING MACHINE.

APPLICATION FILED FEB. 13, 1904.

6 SHEETS-SHEET 1.

@ yzok zu;

No. 833,522. PATENTED OCT. 16, 1906.

' J. A. HESS.

FILE CUTTING MACHINE. APPLIOATION PI'LED FEB. 13, 1904 5 sums-53am 2.

5] 1 l van-to;

Tu: mmms PETERS co, wasummun. o. c.

PATENTED OCT. 16, 1906 J. A. HESS.

FILE CUTTING MACHINE.

APPLICATION FILED IEB.13, 1904.

5 SHEETS-rSHBET 3.

ivi l'ucmes I I No. 833,522. PATE'NTED 0GT. 16, 1906. J A. HESS. I

' FILE CUTTING MACHINE.

APPLICATION FILED PEB.13. 1904.

' 5 SHEETS-SHEET 4.

No. 833,522. v PATENTED 00116, 1906. J. A. HESS. I

FILE CUTTING MACHINE.-

APPLIQATION FILED FEB. 18, 1904.

6 SHEETS-SHEET 5.

@lmuontoz I warumw I I M -UNITED STATES PATENT OFFICE.

FILE-CUTTING MACHINE.

Specification of Letters Patent.

Patented Oct. 16, 1906.

Application filed February 13, 1904. Serial No. 193.424.

2 T on whom it may concern.-

. for moving the file-holder longitudinally and rotatably, for changingthe speed at which said longitudinal movement takes place during theoperation of cutting, for maintaining the file-holder in a variety ofpositions, for stop ing the movement of the file-holder, and or stoppingthe machine at any desired point.

It further consists of other novel features of construction, all as willbe hereinafter set forth.

Figure 1 represents a front elevation, Fig. 2 an end elevation, and Fig.3 a top plan view, of a file-cutting machine embodying my invention.Figs. 4 and 5 re resent, respec tively, in front elevation an inlongitudinal section, a portion of the device by which the fileholder ismaintained in various rotated positions. Fig. 6 represents a perspectiveview of a belt-shifting device that may be employed in detachedposition. Fig. 7 represents a side elevation of a cam and attached partsmounted on a file-holder rod. -Fig. 8 represents a cam-block in detachedposition. Figs. 9, 10, and 11 are respectively a longitudinal andvertical section, a front elevation, and a to plan view, on an enlargedscale, of a portlon of my device whereby the presser-foot is adjusted.Fig. 12 represents a sectional view of a portion of the gearing and itsadjuncts. .Fig. 13 represents in'perspective a portion of thebelt-shifting device. Fig. 14 represents a front elevation,

partly in section, of a portion of my invention in detached position.

Fig. 15 re resents a transverse sectional view of the le-holder, bed,and slide, having certain arts removed for clearness of illustration.igs. 16 and 17 represent sectional views of a portion of the bedandshowing the file-holder at different angles. Fig. 18 represents an endelevation of the adjusting device. Fig. 19 re resents a plan view of aportion of the file-ho der and its adjuncts. Fig. 20 represents a planview.

similar to Fig. 19, but artly in section and having the file removedFig.' 21 represents a cross-section on line a: 00, Fig. 22. Fig. 22represents an elevation of a portion of my invention, partly in section.

Similar numerals of reference indicate corresponding parts in thefigures.

Referring to the drawings, '1 designates'the base of the machine, havingbrackets 2, on which is mounted, by swinging brackets 3, a main shaft 4,having tight and loose pulleys 5 and 6'. On the end of the shaft 4 is aulley 7, from which runs a belt 8 to a pul ey 9, which, by means of ashaft 10, actuates a wiper or a plurality of cams 11. Vertically movableon aguide 12 on-the front upper portion of the base 1 is a saddle 13, inwhich are the bearings for the shaft 10 and on the face of which ismounted a head 14, having segmental slots 15, through which pass bolts16,

by means of which the head is attached to the saddle 13. On the head 14is a guide 17, within which a plunger 18 is adapted to reciprocate,which latter carries a cutter or chisel 19, adjustably secured thereto.At the upper end of the plunger 18 is a rubber spring 20, which issupported within the guide 17. The tension of said spring may be variedby means of the adjusting-screw 21, on which is a lock-nut 22, by meansof which it may be locked in adjusted position.

23 designates a presser-foot baradjustably carried by the head 14 andvertically adjustable therein-in the present instance by means of ascrew 24, which engages an internal thread in said bar. The lower end ofthis bar is enlarged, as seen at 105, said enlargement having anaperture therethrough adapted to receive the sleeve 106, extending fromthe collar 27. The collar 27 is slotted or split, as seen at 107, andhas a bolt 108,'by means of which the collar and sleeve are adjustablysecured to a presser-foot rod 25, which passes therethrough.

109 designates a lug or enlargement at the end of the rod, having anopening therethrough which is angularly inclined to the rod 25 and inwhich the presser-foot is adjustably secured by means of a set-screw110.

28 designates an upright or support rising from the collar 27, and 31designates a similar support rising from the enlargement 105 of thepresser-foot bar 23.

28 designates a stud passing through the IIO upright 28 and providedwith a threaded end nut 112, as best seen in Fig. 9, so that the stud 28is rotatably mounted in the upright 28. 29 designates a screw providedwith a hand-wheel 30 and having threaded engagement with the stud 28*.31 designates a stud secured in a similar manner to the upright 31 sothat it is rotatably mounted thereon. The outer end of the screw 29turns freely in the stud 31, its longitudinal movement therein beingprevented by means of a shoulder 113 and a plurality of nuts 114 at theouter end of the screw 29, one of said nuts serving as a lock-nut, asbest seen in Fig. 11. It will be apparent that, owing to theconstruction, when the screw 29is actuated the presser-foot will berotatably adjusted. The rod 25 may be longitudinally adjusted in thesleeve 106 by means of the bolt 108. The presser-foOt may be adjusted.in the lug 109 by means of the bolt or setscrew 110, and thepresser-foot bar'and its adjuncts may be adjusted with respect to thehead 14 by means of the screw 24. It will thus be apparent that thepresser-foot may be so adjusted that it will always rest flat on thefile-blank and in a line parallel with the cut made by the cutter orchisel 19.

Also attached to the shaft 4 is a pulley 32, from which a belt 33 runsto a pulley 34 on a shaft 35, which is supported at a suitable point, asat 35 in a bearing'or journal on the base 1. The pulleys 32 and 34 aredetachable from the shafts 4 and 35, respectively, and may be replacedby others of different sizes for the purpose of increasing ordiminishing the speed of the feeding mechanism. To insure a properstrain on the belt 33, an idler 36 is mounted on a shaft 37, adjustablysecured to the base 1. At the free end of the shaft 35 is mounted a gear37 connected in the present instance by a train of suitable gear-wheels38 and 39 with a driving or lead screw gear 40, although it is evidentthat pulleys may be employed instead of the gears 37 and 40, the samebeing connected by a belt and having an idler adjustably mounted at asuitable point for keeping the belt tightened. As shown in Fig. 12, thegear 40 is loose on the shaft 41, which forms the extension of theleadscrew 42. At the extreme end of the shaft 41 are the jam-nuts 43 and44, between which and the web of the gear 40 is interposed a plate 45and one or more washers 46, which may be of leather, rubber, or anyresilient material. On the lead-screw 42 is mounted a slide 47, carryinga bent arm 48, whichis secured to a cam 98, movably mounted on a rod 87,which is adjustably secured to a file-holder 86. Mounted on the slide 47is a spindle 48 carrying in the present instance at its rear end anordinary half-nut 49, which, as seen in Fig. 15, practically fills thechamber in which it moves, and is thus prevented from rotating,

and which is adapted to engage with the leadbrought into and out ofengagement with the lead-screw 42. .Transversely movable in the slide 47is a rod 54, held in its adjusted posi- ,tion by a setscrew 55. The rod54 is adapted to contact at the proper time with a block 56, carried bythe frame of the machine adj acent the end of the lead-screw 42. The rod54 when adjusted in the slide 47 causes the latter'to always stop at thesame point, so that the files will all be out uniformly, the block 56acting as a stop for the adjusted rod 54 and also for the slide 47, towhich said rod is secured. Adjustably mounted on the slide 47 is a rod57, having a hooked end 58. It is evident that when the slide is movedto the left, the rod 54 having been first adjusted by the set-screwtherefor, the'end of the rod will strike the block 56 and stop themovement of the slide in that direction. After the first out has beenfinished and the slide returned to its initial starting position thatis, to the leftthe rod 54, striking the block 56, will bring the slide47 to a stop at exactly the same position as before, which will causeall of the different cuts on the fileblank to be in alinement.

The hook 58 travels in the path of a bellorank lever 59, mounted looselyon a shaft 60, journaled in a bracket 61, which is secured to the frameor base 1. At the rear end of the shaft 60 and loosely mounted thereonis a weighted lever 62, which normally retains said lever 59 in theposition seen in Fig. 1, said lever 62 being rigidly fastened to thelever 59 in any suitable manner. Pivoted at 63 to the end of the lever59 is a link 64, which is in turn pivoted at its upper end to a latch65, the latter being suitably pivoted at its other end to the base 1 andhaving a jaw or recess 66, which engages with an arm 67, on which ismounted a belt-shifting fork 68. Attached to the arm or lever 67, whichis pivoted at a suitable point to the base 1, is a spring'69, adapted tomove the fork 68 in a direction to shift the belt to the loose pulley 5.Also attached to the lever 67 is a chain 70, passing over a guide-pulley71 and downward to a treadle 72, secured to the floor adjacent themachine. Pivoted in a bracket 73 on the floor adjacent the machine is asecond treadle 74, from which rises a rod 75 to a lever 76. A weight 77is suitably supported on the rod 75. The lever 76 is pivoted at its end78 to the frame and carries an angle-iron 79, adapted to engage with aprojecting flange 18 on the plunger 18 when the treadle 74 is depressed.On the plunger 18 is mounted a tappet 81,

which is normally in the path of the earns 11; but when the treadle 74is sufficiently depressed the angle-iron 79 israised and'engaging withthe flange 18 will raise the-plunger l8, and the tappet 81 will beraised above the wi er and wholly out of contact therewith.

t will be readily. seenthat the plunger '18 is unsupported in the. headexcept by the fileblank and that the shaft 10, on which theactuating-cam or wiper is mounted, is ournaled in the saddle, so thatwhen the saddle is lowered the tappet instead of engaging the whole ofthe operative surface of the cams will engage only a smallportionthereof, the amount of the operative surface of the cams whichcoacts with the tappet depending entirely upon the distance the saddlehas been raised or lowered with respect to the initial position of thetappet, and this adjustment of the saddle and the head carried therebymay be accomplished by adjusting the presserfoot, presser-foot bar, orby actuating the lever 7 6. It will thus 'be seen that when a light outis desired the saddle is lowered, and when it is desired to make adeeper cut in the file-blank the saddle and the head carried thereby areraised. By the employment of a plurality of cams or a wiper-wheel, asseen in Fig. 2, I am enabled to construct a machine in which the cutterwill strike a greater num ber of blows against the file-blank in a giventime than if I employ a cam having a single operative surface.

Depending from the saddle 13 and secured thereto by a bolt 103 is a rod82, on which is mounted a nut 83, between which and an abutment on thebase 1 is a thrust-spring 84, the

tension of which may be regulated as desired by means of the nut 83. Ina suitable portion of the base 1 is a semicircular longitudinal recess85, adapted to receive a-fileholder 86. Having threaded engagement withthe end of the file-holder 86 is a rod 87, which is rotatably mountedand longitudinally movable. Interposed between the rod 87 and thebracket88, as seen in Fig-.' 5, is a sleeve 89,'having a flange 9 0, towhich is adjustably bolted an adjusting or locking plate 91, havingtransverse recesses-92 in its edge, adapted to engage with the foot 93of a springactuated dog 94. Secured adjustably on the rod 87 is aset-collar 95, (see Figs. 19 and 20 of the drawings,) against whichabuts a sleeve 96, which is loosely mounted on said rod 87 The sleeve 96hasashoulder or flange at each end, one of said flanges abutting againstthe set-collar 95. Loosely mounted on'the sleeve 9.6'is acam 99, whichabuts against the other flange of said sleeve and which is adapted tocoact with a cam 98, secured to the arm 48. Interposed between the arm48 and the flange of the sleeve nearest to the set-collar is a spring97, which tends to keep the two cams 98 and 99 in contact;

100 designates a lug secured on the cam 99 and adapted to engage agroove 1101 ofta bracket 102, which latter is .adjustably attached tothe frame of-the machine.

104 designates alink secured at one end to the head 14 and engaging apin orlugonthe lever 76. This link prevents the weight 77 from movingthe rod or bar 75 downwardly to such an eXtent'that it will strikeagainst the floor 'or foundation on which the machine rests when theoperator releases the pressure of his foot on the treadle 74. Theangleiron .79, carried'by the lever 76, is normally maintained in sucha-position that only a slight movement of the lever 76 is necessary tocause the anglesiron 79 to coact with the flange 18 to raise the plun erout of opera tive position and to raise t e head in which the plungerreciprocates.

The operation is as follows: The file-holder travels from left to right.Assuming that the machine is to be used to cuta half-round file, thefile-blank is mounted on the holder 86 with its tangtoward the left, asseen most clearly in Fig. 19 of the drawings. The presser-foot bar 23 isadjusted in the head 14 so that the presser-foot will be in engagementwith the file-blank when the plunger 18 isat the lowest point of itsstroke,.at which time the cutter 19 is in operative relation to thefileblank. The plunger 18 is vertically reciprocated, its upwardmovement being caused by the action of the cam or Wiper 11 upon thetappet 81,-its downward movement being due to its own weight, assistedbythe resilient member 20. The reciprocation of the plunger 18 causesthe cutter 19 to cut the teeth in the blank, which latter is fed to theright by the action of the lead-screw 42. It will be noted that thepresser-foot 26, owing to the tension of the spring 84, normally restsupon the file-blank, which is drawn'thereunderby the action of thefeed-screw 42. vBy means of the screw 24 the presser-foot 26 may bevertically adjusted with relation to the head 14. When the screw 24 istightened'in the head 14, the presser-foot bar 23, with which this screwhas engagement, is forced downward, thereby raising the head, and thusincreasing thedistance between the latter and the file-blank. This willincrease the force of the blow, as the plunger'will descend through alonger distance. i If the screw 24 is loosened, the presser-foot will bedrawn upward therewith, and the distance between the head and thefile-blank will be correspondingly decreased. The tappet 81- thereonwill be kept at a decreasing distance from the'travel ofthe cams as theheadis lowered by the adjustment of the presser-foot. The rapidity ofthe blow will be increased, and as the distance through which theplunger travels is decreased the forceof the blow will be also lessened,it being apparent that the greater the distance through which vtheplunger drops the greater the force of the blow imparted to thefile-blank by the cutter 19. In this way the machine may be regulated sothat only a light tap is made on the file-blank or so regulated that ablow may be given of enough force to out the largest and coarsest filesin use. It is clear that this adjustment of the Presser-foot may be madewhile the machine is in operation and the depth of the file-teeth may bevaried without stopping the machine. By reason of the elastic cushionsor washers 46, interposed between the gear 40 and the plate 45, as thechisel strikes against the blank a slight dwell is permitted in themovement of the fileholder 86, so that the blank is not drawn forward'until the chisel is released therefrom. It is essential in a filehaving a point smaller than the body thereof that the space between theteeth near the point be less than the space between the teeth on thebody, and if the same blow were given by the plunger the cutter would beliable when cutting near the point to cut through the same. When thecarriage 47 is moved to the left, the lug 100 engages the slot 101 inthe bracket 102 and is rotated in a direction away from the operator orto the left. The set-collar 95 is essential, if it is desired to movethe carriage or slide 47 and the file-holder 86 rearwardly at the sameoperation, because, if this were not employed, when the arm 48 of thecarriagewas moved toward the left the sleeve 96 and cam 98 would .bemoved to the left but the file-holder 86 would remain stationary. Asthis set-collar 95 is fixed to the rod 87 and the rod 87 is secured tothe file-holder 86, the rearward movement or to the left of the arm 48will cause the file-holder 86 to be moved rearwardly therewith, as isevident. It is of course to be understood that when the set-collar 95 isnot employed and the lug 100 is seated in the camgroove 101 thefile-holder 86 has always been moved rearwardly by hand after thecarriage has been moved rearwardly and in such a manner that the locknuton the rod 87 abuts against the adjacent end of the sleeve 96 and thatsaid end or the flange thereon, as seen in Fig. 19, will always contactwith said lock-nut when the fileholder is moving forwardly. If theset-collar 95 is employed, it is fixed upon the rod 87 so as to preventany longitudinal movement of the sleeve 96 after the locking-nut and rodhave been assembled in operative relation. In all cases in which thepoint is smaller than the body of thefile the lug 100 of the cam 99should be seated in the cam-slot 101 of the adjustable bracket 102before the machine is started, and the extreme end of the file will bedirectlyunder the cutter. The half-nut 49 is now caused to engage thelead-screw 42, whereby the carriage 47 is moved toward the right, as isalso the arm 48, connected therewith. This longitudinal movement of thearm 48 to the right will cause the lug 100 to move outward from the endof the slot in the bracket, and thus rotate the cam 99, during whichoperation the cam 98 will be slowly slid to the right by the arm 48,thus first imparting to the file-holder 86 a slow uniform speed relativeto the movement of the arm 48. After the lug 100 is removed from theslot the movement of the file-carrier will be the same as that of thearm 48. In this way an increment is produced or, in other words, thespace between the teeth of the file near the point will be slightly lessthan the space which exists between the teeth throughout the body of thefile. The spring 97 will keep the cam 98, which is fixed or rigidlysecured to the arm 48, always in contact with the cam 99; but there willbe no relative movement between the said cams, except when the lug 100and the cam 99, secured thereto, is being rotated by the coaction ofsaid lug with the slot 101. After the lug 100 disengages from the saidslot the two cams move as if they were one solid piece of material. Thecam 98, which is secured to the arm 48, is mounted loosely on the sleeve96, and the spring 97, which normally keeps the cams together, willpermit the gradual relative movement of the cam 99, and thus permit aretardation in the forward movement of the file-carrier. When the cutter19 has reached the end of the blank, the hook 58 of the bar 57 is soadjusted that it engages with the bell-crank lever 59, and therebydisengages the jaw or recess of the latch from the bar 67, which permitsthe spring 69 to automatically shift the belt to the loose pulley 5. Theoperator then depresses the treadle 74, and thereby lifts the plunger18, so that the tappet 81 is above the path of the cams 11. The furthermovement of the treadle, acting through the engagement of the flange 18with the head 14, raises the saddle 13, thereby releasing-thepresser-foot 26 from its engagement with the file. It is evident thatthis movement of the treadle 74 is opposed by the force of the spring84, the tenslon of which may be regulated as desired by means of theset-nut 83 on the rod 82.. This spring normally acts to hold the saddlestationary while the plunger 18 is being reciprocated by the action ofthe cams 11 and also acts to force the presser-foot mounted in the head,which is secured on the saddle, against the file-blank and retain thelatter in position on thefile-holder. When a out has been finished, theoperator by means of the handle 53 releases the half-nut 49 from itsengagement with the lead-screw 42. The carriage 47 and the file-holderand its adjuncts are then returned for the next out which is to be madeon the fileblank, the rod 54 having previously been adjusted. so thatits end strikes the lug 56, when the file-blank reaches the sameposition as before. The foot 93 of cesses 92.

the spring-actuated dog 94 is now released from. its engagement with oneof the recesses 92 the adjusting-plate or locking device 91., whichlatter is then suffi'ciently rotated, and the foot 93' will enteranother of the re- It is evident that by means of the said plate theamount of rotation given to the rod and the file-holder may be varied asdesired, and the rotary position given to the rod andfil'e-holder isaccurately determined,

and also that the file-holder is rigidly held in its adjusted positiondurin the cutting operation. The adjustable rod 54 acts with the block56 as a. stop-gage, whereby when. one cut is made and the carriage isreturned for anotherv out said carriage and said file-holder will alwaysstop at the same point, and thus insure uniformity in the finishedfiles. It is evident that the head 14 may be rotatably adjusted on thesaddle 13 by the bolts '16 thus permitting the changin of theinclination of theplunger and chise as desired. Itv

is also evident that the force of the blow given by the cutter 19 may beadjusted by means of the screw 21-, acting through the rubber or. othersuitable spring 2.0.

Figs. 9,10, and 111 show in detail the manner of transversely adjustingthe presser-foot 26 and at the same time changing the angle at which itbears on the file, It will'be seen that by means of] the screw 29 andhandwheel? the shaft 25 may berotated' and its rotation. very carefullyadjusted, so that the resser-foot will engage with the file at anydesired angle. Heretof'ore in the art when the blank has been returnedfor the next cut the amount of rotation given to the file holder has notbeen accurately determined, but adjusted by the eye and on this accountone cut often laps over another.. By means of' my adjusting device theuniformity of' the finished files is certain, and as adjustingplates.with any desired number of'transverse recesses therein may be used thenumber of cuts on each file may be varied, as desired, and owing to thestop-rod 54', which will bring the file-holder to a stop always, at thesame place, the cuts will also be in alinement. It is obvious that afile of any desired number of sides may be accurately cut and also thatowing to the curvature of the operative surfaces of the earns 98 and 99and the adjustability of their action the spaces between the teeth ofthe file may be automatically varied at any predetermined point and thatby increasing the operative surfaces of the cams and the cam-slot 101the distance of this action may be varied as desired. By

means of the lever 76 and the, angle-iron .79

the plunger may at any time be raised so that the tappet will be out ofline of the wiperwheel or kept at such a distance therefrom that theamount of operative surface of the plurality of'cams maybe varied, asdesired,

and. thereby the force of the blow given by the cutter to the file-blankmay be correspondingly: varied. It will be also noted mountedwithineither of'the gears 37 or 40, if so desired.

My invention is designed for cuttingnot only round or'partly-round:files, but also for the cutting of files having any desired number ofsides. If a flat file is to be cut,'it is evident that the file-holderwould not be rotated, and therefore the adjusting'means for rotating thefile-holder would not be used, and also, that the location of saidadjustingmeanswill not in any way hinderthe cutting ofthe'flat surfaceof'the'file-blank.

It is evident that various changes maybe made by those skilled in theart which may come within the scope of my invention, and I do not,therefore, desire to belimited in every instance to the exactconstruction herein shown and described.

Having thus described my invention, what. I claim as new, and desire tosecure Let.- ters Patent, is

1. In a file-cuttingmachine, aframe, a reciprocating cutter-,1alongitudinally-movable file-holder, a rod connected with said.fileholder, a plate keyed to said rodso that the, rod may slidetherethrough and having recesses, and means on the frame adapted toengage said recesses and maintain therotaryposition given to said rod.

2. In afile-cutting'machine, a reciprocating cutter, alongitudinally-movable fileholder,. arod adjustablysecured to saidfil'eholder, an adjustable device in which said rod is longitudinallymovable, said device having transverse recesses therein, and aspring-actuated dog carried by said device and adapted to engage saidrecesses to hold groove, a handle operatively connected with saidsleeve, a file-holder movably mounted in said frame, an arm secured tosaid carriage,

and connections between said arm and said j file-holder.

4. In a file-cutting machine, in combination, a file-holder, means forlongitudinallymoving said file-holder, a rod secured to saidfile-holder, an adjustingdevice keyed on said .rod, arms extending fromsaid adjusting device, and means yieldingly actuated and engaging saidadjusting device for maintaining the rotary position given thereto.

5. In a file-cutting machine, in combination, a frame, a dovetailedguide thereon, having a slot therein, a saddle mounted on said guide, ahead adjustable on said saddle, a rod secured to said saddle, andextending through said slot, a connection secured to said rod andpassing through a portion of said frame, a set-collar adjustable on saidrod, a spring interposed between said set-collar and said frame forpreventing the upward move ment of said saddle, a plunger mounted insaid head, and means for reciprocating said plunger.

6. In a file-cutting machine, in combination, a frame, brackets pivotedthereon, a

driving-shaft mounted in said brackets, a

guide on said frame, a saddle movably mounted thereon, a cam-shaftmounted in said saddle and operatively connected with saiddriving-shaft, resilient means for holding said saddle downwardly, ahead adjustably carried by said saddle, a resser-foot bar carried bysaid head, and vertically adjustable with respect thereto, apresser-foot carried by said bar, means for rotating said resser-foot,and a plunger mounted in said head and adapted to be reciprocated bysaid cam-shaft.

7. In a file-cutting machine, in combination, a frame, a file-holdermounted thereon, a rod connected to said file-holder, speedchangingmechanism engaging said rod, a

carriage, means for reciprocating said carriage, a connection betweensaid carriage and said mechanism, and adjustable means on the frameadapted to coact with said speedchanging mechanism to automaticallyreduce the speed of said file-holder.

8. In a file-cutting machine, in combination, a frame, a file-holdermounted thereon, a rod secured to said file-holder, a bracket mounted onthe frame, a sleeve journaled in said bracket, through which said rod ismovable and to which it is keyed, an adjustingplate removably secured tosaid sleeve, and means mounted in said bracket adapted to engage saidplate and hold it in its adjusted position.

9. In a file-cutting machine, a frame, a saddle, movable thereon,yielding means for holding said saddle downwardly, a head adjustablycarried by said saddle, a plunger adapted to be reciprocated in saidhead, said plunger having a flange at its lower end, a file-holdermovably mounted on said frame, a lever pivoted in a plane above saidfileholder and at one side of said head, an angleiron carried by saidlever adapted to engage said plunger-flange, a link carried by saidhead, a lug extending from said lever and engaging said link, and aweighted treadle in suitable connection with said lever.

10. In a file-cutting machine, a head, a

presser-foot bar adjustably carried thereby, and having an enlargementat its lower end having an opening therethrough, a sleeve adapted to fitsaid opening, a rod passing through said sleeve, means for adjustablysecuring said rod to said sleeve, an enlargement at the end of said rodhaving an opening therethrough atan angle to said rod, a presserfootadjustably secured in said opening, and means for rotatably adjustingsaid rod during the working operation.

11. In a file-cutting machine, a head, a presser-foot bar'adjustablycarried thereby, an enlargement at the lower end of said bar having anopening therethrough, a sleeve having a collar integral therewithadapted to fit said opening, a presser-foot adjustably carried by saidsleeve and collar, a lug extending from said collar, a stud rotatablymounted thereon, a lug extending from said enlargement, a stud rotatablymounted thereon, a screw having threaded engagement with the studmounted on said collar, the end of said screw turning freely in the studcarried by said other lug, and means for preventing the longitudinalmovement of said screw in said last-mentioned stud.

12. In a file-cutting machine, a reciprocating cutter, a file-holderlongitudinally movable, a rod secured to said fileholder, a sleeveloosely mounted on said rod, a set-col lar on said rod for confiningsaid sleeve against the file-holder, a flange at each end of saidsleeve, a cam rotatably mounted on said sleeve, a lug extending fromsaid cam, a cam slidably mounted on said sleeve adapted to contact withsaid rotatable cam, said cams having operative cam-surfaces on their adjacent sides in contact, a spring interposed between the slidable cam andone of said flanges, means including an arm connected with saidslidably-mounted cam for longitudinally moving the sleeve and itsassembled parts, a bracket adjustably secured to the frame, having aninclined groove into which said lug may pass whereby the longitudinalspeed of the file-holder may be reduced,

13. In a file-cutting machine, a frame, a guide thereon provided with aslot, a saddle vertically movable on said guide, a head carried by saidsaddle, a plunger operatively carried by said head, a shaft journaled insaid saddle for actuating said plunger, resiliently-actuated meanspassing through said slot and coacting with said frame and said saddlefor preventing upward movement of said head, and a presser-foot carriedby said head and longitudinally, laterally and angularly adjustable withrespect thereto.

14. In a file-cutting machine, a plungercarrying head, a resser-foot barcarried by said head and vertically adjustable with respect thereto, arod carried by said bar, means for rotatably adjusting said rod, a

presser-foot adjustably carried by said rod,

and means for angularly adjusting said resser-foot with respect to saidrod.

15. In a file-cutting machine, a frame, a file-holder, a rod securedthereto, a cam slidably mounted on said rod, a cam loosely mounted onsaid rod adjacent said fileholder, and having a lug, a bracket having acam-groove with which said lug is adapted to engage adjustably carriedby said frame, said cams having cooperating cam-faces on' their adjacentsides, yielding means for maintaining said cam-faces in contact, andmeans secured to said slidably-mounted cam for causing the same to moveforwardly said rotatable cam and thereby advance the fileholder.

16. In a file-cutting machine, a frame, a file-holder, a rod securedthereto, means coacting with said frame, rod, and file-holder toautomatically reduce the speed of the latter, said means including camsmounted on said rod having on their adjacent faces cooperatingcam-faces, said cam-faces being maintained always in engagement witheach other, one of said cams having a lug thereon, and said frame havinga bracket fixed thereto with which said lug coacts to partially rotatethe cam to which said lug is secured.

JOHN A. HESS. Witnesses:

WM. OANER WIEDERSEIM, C. D. MOVAY.

